/*
 * Copyright 2018-Present Okta, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.okta.spring.boot.oauth;

import com.okta.spring.boot.oauth.config.OktaOAuth2Properties;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.oauth2.server.resource.authentication.JwtAuthenticationConverter;
import org.springframework.security.oauth2.server.resource.authentication.JwtGrantedAuthoritiesConverter;

import java.util.Collection;

final class OktaJwtAuthenticationConverter extends JwtAuthenticationConverter {

    public OktaJwtAuthenticationConverter(String groupClaim) {
        JwtGrantedAuthoritiesConverter originalConverter = new JwtGrantedAuthoritiesConverter();
        this.setJwtGrantedAuthoritiesConverter(source -> {
            Collection<GrantedAuthority> result = originalConverter.convert(source);
            result.addAll(TokenUtil.tokenClaimsToAuthorities(source.getClaims(), groupClaim));
            return result;
        });
    }

    public OktaJwtAuthenticationConverter(OktaOAuth2Properties oktaOAuth2Properties) {
        JwtGrantedAuthoritiesConverter originalConverter = new JwtGrantedAuthoritiesConverter();

        if (oktaOAuth2Properties.getAuthoritiesClaimName() != null) {
            originalConverter.setAuthoritiesClaimName(oktaOAuth2Properties.getAuthoritiesClaimName());
        }

        this.setJwtGrantedAuthoritiesConverter(source -> {
            Collection<GrantedAuthority> result = originalConverter.convert(source);
            result.addAll(TokenUtil.tokenClaimsToAuthorities(source.getClaims(), oktaOAuth2Properties.getGroupsClaim()));
            return result;
        });
    }
}